Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
  • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
  • F26B9/103—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof using fixed or removable drying air channels placed in the stack, e.g. horizontally or vertically
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
  • A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
  • A01F25/16—Arrangements in forage silos
  • A01F25/22—Ventilating arrangements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
  • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
  • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
  • F26B17/1408—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the gas being supplied and optionally extracted through ducts extending into the moving stack of material
  • F26B17/1416—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the gas being supplied and optionally extracted through ducts extending into the moving stack of material the ducts being half open or perforated and arranged horizontally
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
  • F26B2200/06—Grains, e.g. cereals, wheat, rice, corn

Definitions

• Drying the beans after harvest and before storage is a necessity due to the characteristic changes of strongly hydrated bulk products such as respiration or oxidation of glycids, intracellular fermentations, bacterial and fungal development and all the resulting deleterious effects.
• the present invention pertains generally to the technological field of grain drying equipment and relates more specifically to a new design applied to a dryer tower air duct.
• the grain drying towers in static dryers are provided with air inlet and outlet ducts, known as gutters, through which the air flow is fed by a At the end, it flows along the aeroduct and exits through the longitudinal opening at the base, permeating the grain mass, continuing towards other gutters in parallel.
• This air is used to heat or cool and consequently dry the grains passing in the drying tower as described in PI 0.802.885-0, high performance grain dryer, from the same depositor of the present application.
• This previous process describes a dryer that combines in its drying tower the three airflow principles adopted in the drying processes (concurrent, countercurrent and cross), and presents different airflow values from the top " to the base of the tower. , taking into account the nature of the beans and their behavior during drying for maximum process efficiency, incorporating means for homogenization in the grain loading box, hydraulic discharge and hot air homogenization.
• the present invention has been designed for use in the high performance grain dryer, but may also be employed in other conventional dryers.
• the invention proposes perforation of the gutters on their faces to reduce the grain column between the gutter rows, which increases the drying rate due to the thinner grain thickness, thereby reducing the drying time.
• the production will be increased by up to 100% compared to a dryer of the same technology.
• Figure 1 Perspective drawing of an embodiment of the proposed rail, object of the present invention, in which we can see the openings on their faces and it is acting on the air inlet in the dryer.
• FIG. 1 Perspective drawing of an embodiment of the proposed chute, object of the present invention, in which " we can see the openings on its faces and it is acting on the air outlet in the dryer.
• Figure 3 Perspective drawing of a second embodiment of the proposed rail, object of the present invention, in which we can see openings only in their upper faces and it was represented acting on the air inlet and outlet in the dryer.
• Figure 4 sectional drawings of the first embodiment of the invention, where the air inlet and the corresponding hot air flow and the air outlet and the used air flow are shown.
• Figure 5 sectional drawings of the second embodiment of the invention, wherein the air inlet and the corresponding hot air flow and the air outlet and the used air flow are shown.
• Figure 6 illustrative perspective drawing of the mounting of the rails in the dryer and the corresponding air flows.
• aeroduto perforated to grain dryers tower refers to a rail (1), V-shaped, comprising two vertical sides (2), together by two converging upper faces (3) and closed at one end (4), the faces being provided with a plurality of openings (5), which reduce the grain column between the rows of rails (1) in the tower ( Figures 6 and 7), which increases the drying rate because the grain thickness is thinner, thereby reducing the drying time.
• a first embodiment of the invention is shown in figures 1 and 2, having openings (5) on all peripheral faces.
• the air flow in the gutters when acting as air inlet (E) or air outlet (S) is shown in figure 4.
• FIG. 3 A second embodiment of the invention is shown in Figure 3, having openings (5) only at the converging upper faces.
• the air flow in the gutters when act as air inlet (E) or air outlet (S) is shown in figure 5.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Drying Of Solid Materials (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (5)

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Citations (6)

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• 2009
  • 2009-04-16 BR BRPI0901256A patent/BRPI0901256B1/pt active IP Right Grant
• 2010
  • 2010-04-15 EP EP10763996.5A patent/EP2420132A4/de not_active Withdrawn
  • 2010-04-15 WO PCT/BR2010/000130 patent/WO2010118496A1/pt active Application Filing
  • 2010-04-15 US US13/264,668 patent/US8961277B2/en active Active
  • 2010-04-15 CA CA2758408A patent/CA2758408C/en active Active

Patent Citations (6)

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